摘要:
A hydrogenation process for producing high monoene compositions is disclosed. In particular, a catalyst comprising basic copper carbonate is used for the selective hydrogenation of oils that contain unsaturated fatty acyl components such as unsaturated vegetable oils. Hydrogenation according to the methods of the invention yield high monoene compositions that are useful for industrial applications, such as lubricants.
摘要:
A lubricating composition containing one or more esters obtained as a reaction product from a reaction mixture of a glycerol component, a fatty acid component, and a carboxylic acid component. The lubricating composition can additionally contain a water-insoluble fluid. The lubricating composition is suitable for use as a lubricant and rate of penetration enhancing additive in drilling muds for oilwell drilling operations.
摘要:
The invention provides methods for preparing a blended lube base oils (180) comprising at least one highly paraffinic F-T lube base stock (175) and at least one base stock composed of alkylaromatics, alkylcycloparaffins, or mixtures thereof (127 or 153). The use of base stocks composed of alkylaromatics, alkylcycloparaffins, or mixtures thereof improves the yield of lube base oils from F-T facilities, as well as provides moderate improvements in physical properties including additive solubility.
摘要:
There are disclosed compositions for use as extreme pressure lubricants for use in general machinery as well as in the refrigerant of air conditioners, refrigerators and heat pumps. The compositions are designed to lubricate moving parts of machinery. In its broadest aspect the invention comprises a metal conditioner containing a lubricating oil and a bismuth compound. A further embodiment involves a lubricating oil, a bismuth compound and a molybdenum compound. The lubricating compounds can be added to a refrigerant gas.
摘要:
A solid lubricant and composition useful for lubricating the flanges of locomotive wheels, railcar wheels, rail track and in applications where it is desirable to reduce friction when metal contacts metal. The solid lubricant having from about twenty-five percent to about seventy percent by volume of a polymeric carrier, about five to seventy-five percent by volume of organic and inorganic extreme pressure additives, about zero to twenty percent by volume synthetic extreme pressure anti-wear liquid oil, and about zero to one percent by volume optical brightener.
摘要:
This invention is a composition that includes a transesterified fatty acid ester resulting from the reaction of a fatty acid ester, in the presence of an acid, with a hydroxyl-containing compound. The fatty acid esters of the invention are selected from those with a carbon number of eight to twenty. The hydroxyl-containing compound is an alcohol having a carbon number between one and eighteen. The resulting composition is useful as a lubricant, as a heat transfer agent, as a rheological modifier and as a corrosion/moisture inhibitor, among other uses.
摘要:
The present invention provides hydrofluorocarbon compositions suitable for use in a wide range of applications. The compositions of the present invention tend to be soluble in hydrocarbon lubricating oils, and thus, are especially useful in replacing CFC and HCFC compositions in refrigeration applications.